The 1944 Bletchley Park Cryptographic Dictionary

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SLIP, n :

(especially). Sheet of paper containing short description of a particular code or cipher system with details of its external characteristics (e.g. call-signs, preamble, etc.), users, and period of currency.

SLIP, v :

To apply a subtractor or code-group at successive positions of a reciphered code message with a view to finding out where it may be located.

SOLID :

Written or recurring in one continuous run, i.e. without spaces or gaps.

SOLVE :

1. To read or break (a cipher or any part thereof).

2. To identify (a code-group).

SORT, n :

Process of arranging in any particular order.

SORT, v :

To arrange on any particular basis.

SPACED :

Characterized by spaces, especially equal spaces, between successive members of a natural or other series.

SPELLER :

Code-group for one or more letters used in spelling words; ( = next).

SPELLS :

Code-groups for single letter, bigrams, or other units, used for spelling words, especially proper names, not otherwise provided for in the code.

SPIDER-WEB :

(in Enigma). Obsolete for a chain in a menu.

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